advisor

Concise Oxford English Dictionary © 2008 Oxford University Press:
advise/ədˈvʌɪz/

▶verb

• 1 recommend (a course of action).

  ■ offer advice to.

• 2 inform about a fact or situation.

– derivatives
adviser (also advisor) noun.

– origin ME: from OFr. aviser, based on L. ad- ‘to’ + visere, frequentative of videre ‘to see’.